Abbreviations:
Chain - ch
Single crochet - -sc
Slip stitch – ss
Front post single crochet – fpsc

You will need: 100 g white yarn and 30 g black yarn OLGA, 95% wool, 5% acrylic, 100g/392m; 100 g melange blackly-grey yarn DGINS, 31% wool, 69% acrylic, 100g/300m hook size 3mm, size 4mm and 3,5mm, 1 acrylic strasse of Colibri.
Directions:
The hat is worked top down. Crochet using 1 thread of white yarn OLGA and 1 thread of melange blackly-grey yarn DGINS held together.